Pendtjiittmxbaiialtce foe quick weighing



B. PENN.- TELEGRAPH SCALE.

No. 9,635. Patented Mar. 29, 1853.

UNITE STATES PATENT OFFICE.

BENJ. FENN, OF HARTFORD, OHIO.

PENDULUM-BALANCE FOR QUICK WEIGHING.

Specification of Letters Patent No. 9,635, dated March 29, 1853.

To all whom it may concern:

Be it known that I, BENJAMIN FENN, of Hartford, Trumbull county, Ohio, have invented a Machine for Ascertaining the Weight of Bodies, which I believe to be new and useful. It will indicate, in a moment, the weight of an article.

The following I intend to be an accurate description of the construction and operation of the machine. Referring to the annexed drawings, Figure 1 which gives a perspective front view; Fig. 2d which presents a view of the underside of the platform, with one lever ;and Fig. 3d which presents a view of the same side of the platform, with three levers.

A, B, is a platform, say 16 inches by 12, and one inch thick, standing on short legs, with a post A. and B. on each side. Between these posts and supported by them, swings a frame made of two semi-circles, C. and D. say 16 inches in diameter, parallel to each other but 13 inches apart, fastened firmly together at the ends by cross pieces, and notched, finely, on the under side. The circles, to secure heft, are wider in the middle than at the ends.

A semi-diameter is framed into each arc, near the middle, and a pin of smooth wire passes through it into the post 83; inches above the platform. By these pins and semi-diameters the circular frame is suspended and swings easily backward and forward. Vfhen made of iron the semi-diameters should have, each, a sharp edged shoulder, in the form of a wedge on the outside, to rest on the posts, enabling the circular or semi-circular frame to move with little or no friction.

To the right ends of the semi-circles (and between them) is attached a plate which receives the thing to be weighed, and is kept level by parallel movable arms, E, and F, attached to two cross pieces G, and H. These cross pieces are fastened, one to the plate, the other to the post B, above the smooth pin, this post being longer than the other to receive the cross piece.

Directly under the semi-circle D, and to the left of its middle is a catch K, which may be framed loosely into the platform, or into a small and short post P, and pass through the platform. This catch plays into the notches of the semi-circle, preventing the frame from swinging to the right,

and is operated upon by the lever L, which is fastened on the underside of the platform. Opposite to this catch, to the right, and nearly under the circle is another catch, M, which receives a pin on the inside of the arc, and holds the frame still, whatever body may be placed on the plate to be weighed. This catch is also operated upon by the lever, it being framed in and passing through the platform.

When the lever is moved to the right, the catch M drops from the pin; the circular frame is instantly moving; and the body on the plate descends with the velocity of a falling body, and moves to the left a distance proportioned to its weight; and when it stops and is on the point of swinging back, the circle D is caught by the catch K, and held fast; and an index, N, points to the figures on the circle C, which has been graduated for the purpose, and tells the weight.

\Vhen the lever is moved to the left, the catch K is disengaged, and the circular frame returns to its place and is ready for weighing.

hen the lever stands parallel with the sides of the platform both catches fall out, and the circular frame moves easily, backward and forward. It can then be used as a common balance for weighing out coffee, tea, &c., to a customer. In this case an additional row of figures will be needed on the circle C.

The machine can be made of any size, to weigh an ounce, a pound, a hundred pounds, or more. When of a larger'size, both circles should be notched, and two catches under each, to be operated upon by the same lever in connection with two short levers, O, and O, on the underside of the platform as seen in Fig. 3d.

What I claim as my invention and desire to secure by Letters Patent is- A machine for ascertaining, instantly, the weight of bodies by means of a scale disk or plate support-ed by pivots upon a heavy or weighted semi-circular frame or its equivalent, in the manner of a pendulum, and operated upon by catches substantially as herein described.

BENJAMIN FENN.

Witnesses WM. H. HARTSON, ALVA HART. 

